https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78804 --- Comment #24 from DJ Delorie <dj at redhat dot com> --- "olegendo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> writes: > I don't know why it was decided to use this ABI. Maybe some legacy > stuff. Compatibility with Renesas's compiler.